Sleepers of the Cave: Vol 1 - To Kill One

A dead child - sadistically murdered - his twin missing.
A ring procuring children for the rich and powerful.
A sinister organisation led by a shadowy figure known only as 'The Stoatmaster' whose cold tentacles seemingly stretch unendingly so that no place and no one is safe - not even the police.
A Muslim detective, himself a twin, whose background renders others suspicious of him. His ruthless intelligence and tenacity converge to an obsession with finding the missing child and her brother's killer.
His problem - he wants to leave the police.
One last case can be a case too far when a child's face relentlessly haunts you - pulling you further into the abyss and your own family is in danger of disintegration.
When depravity is licenced by money and everything, even a child, has a price, the only word left is 'evil'.